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Peek torque +- 50rpm( check for your motor / tune) should be your sweet spot BSFC below consumption rises fast. Hold peak as long as you can then down shift . What is the rpm difference from 6 to 5? I assume@60mph.
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Computer/ tuner may be the limiting factor keeping your motor from being able to hurt it self at or above 1,200°f with a 100°f buffer. Or if slower than peek to far there may not be enough gass flow to provide more boost.
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Is egt probe before or after turbo?......... there is an aproxamitly 250°f drop across the turbo...
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With my stock tuning 1000°@15psi ,cold side, is all I can do normally 1100 with enough speed and grill block, empty
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1st gen cummins 91.5 dodge d250 ,HX35W/12/6 QSV
ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 31.32mpg 100mi 3.193 USG 5/2/20
Former
'83 GMC S-15 Jimmy 2door 2wd O/D auto 3.73R&P
'79 Chevy K20 4X4 350ci 400hp msd custom th400 /np205. 7.5-new 14mpg modded befor modding was a thing
87' Hyundai Excel
83 ranger w/87 2.9 L FI2wd auto 18mpg on the floor
04 Mitsubishi Gallant 2.4L auto 26mpg
06 Subaru Forrester XT(WRX PACKAGE) MT AWD Turbocharged 18 plying dirty best of 26mpg@70mph
95Chevy Blazer 4x4 auto 14-18mpg
04 Chevy Blazer 4x4 auto 16-22mpg
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